ASTM D7193-17(2022) PDF

Overview

ASTM D7193-17(2022) specifies requirements for unsintered, pigmented, extruded films and tapes manufactured from polytetrafluoroethylene (PTFE). This standard covers products with nominal thicknesses ranging from 0.025 mm (0.001 in.) to 0.51 mm (0.020 in.), comprising at least 99% virgin PTFE before the addition of pigments. These PTFE extruded films and tapes are valued for their unique chemical resistance, mechanical strength, and versatile use across industrial sectors.

This specification is particularly relevant to manufacturers, suppliers, and end-users seeking to ensure product quality and reliability in applications requiring colored PTFE films and tapes. It supplements ASTM D6585, which addresses unsintered, non-pigmented PTFE film or tape products.

Key Topics

• Material Composition: Requires ≥99% virgin PTFE content prior to pigment introduction; recycled PTFE is not currently included.
• Product Types: Defines three types based on application and density:
  • Type I: Thread Seal Tape
  • Type II: Low Density Tape
  • Type III: Wire and Cable Tape
• Classification & Grades: Detailed tables classify tapes by density, thickness, tensile strength, and elongation.
• Performance Requirements:
  • Tensile strength and elongation tested per ASTM D882
  • Dielectric breakdown strength is tested according to ASTM D149
  • Optional electrical properties per ASTM D150 and D257 when specified by contract
• Dimensional Tolerances: Strict standards for thickness and width tolerances to ensure consistency
• Sampling and Testing: Products must be sampled and tested using proper statistical methods; conditioning prior to testing must meet defined requirements
• Packaging and Labeling: Containers must be marked with type, thickness, lot number, and manufacturer for traceability
• International Compatibility: Data from this standard are technically equivalent to those obtained via ISO 13000-1 and ISO 13000-2

Applications

Unpigmented and pigmented PTFE extruded films and tapes are used in a wide range of industries, leveraging the chemical stability, electrical insulation, and mechanical durability of PTFE:

• Plumbing and Pipe Sealing: Thread seal tapes (Type I) are commonly used for sealing threaded pipe joints to prevent leaks
• Electrical Insulation: Wire and cable tapes (Type III) provide insulation and protection for electrical wiring in demanding environments
• Industrial Gaskets and Spacers: Low density tapes (Type II) serve as gaskets or spacers where flexibility and chemical resistance are required
• Color-Coding Applications: Pigmented films allow for easy identification or compliance with color-specific industry standards
• Aerospace and Automotive: Utilized where non-stick, high-performance, and identified materials are critical

The versatility of pigmented PTFE film or tape makes it a standard choice for critical sealing, insulation, and identification tasks in challenging operational environments.

Related Standards

Organizations utilizing ASTM D7193-17(2022) may also refer to the following related standards to ensure comprehensive quality control and compatibility:

• ASTM D6585: Specification for unsintered, non-pigmented PTFE extruded film or tape
• ASTM D882: Test method for tensile properties of thin plastic sheeting
• ASTM D149, D150, D257: Test methods for dielectric strength and electrical properties of insulating materials
• ASTM D6040: Guide to PTFE extruded film or tape test methods
• ISO 13000-1 and ISO 13000-2: International standards for requirements and test methods for semi-finished PTFE products
• GSA A-A-58092: Specification for anti-seize PTFE tape, often referenced for military or government procurement

Summary

By adopting ASTM D7193-17(2022), stakeholders ensure the manufacture, testing, and supply of reliable unsintered pigmented PTFE films and tapes meeting stringent quality benchmarks for industrial, electrical, and commercial applications. This standard enhances confidence in product performance, safety, and compliance across the global supply chain.